Lo extraction full and delta load

Hi Gurus

I found some good points for LO extraction from previous threads but need to know the things more correctly.Pl tell me am i right if i go for LO extraction by following process and pl give me your advise for the question given at the end of steps.

steps

1.Transfer BC DS if update "Inactive "in LBWE

2.maintain ES by transferring required filed ( but how do i activate ES?)

3.Maintain DS by selecting appropriate fields in selection,hide etc..( how can I activate DS?)

4.whats the use of Job control given in LBWE?Is it a scheduling a job to extract data from r/3?

5.delete set up tables

6. fill up set up tables

7.check RSA3 to see data

8.Now in BW replicate the DS( is it the correct time to replicate or do I need to replicate before this step)?

9.assign DS to IS ( or I need to assign IS to DS?)

10.create info pkg and schedule

In addition to the questions given with the steps above , pl tell me the above process will give me "full load"? if yes then what changes i need to make to do delta load ( its nice if u can tell me the steps)

when we use update mode ? Pl tell me after which steps referring to steps mentioned above.